Small cosmetic usability issues

[geoffbon]

Hi - I really like the concept of this, I always found WorldTimeBuddy useful but limited. Great that you've built something which is easier to get to without using a whole new tab, too.

I see the code hasn't changed for a while, but If you're still working on this, a couple of things which I think would make this a lot more usable:

1. Some kind of highlighting for the home time which makes it easy for the eye to lock onto it and use it as a baseline when comparing to other time zones. WTB uses a small 'home' symbol for this, but even a different color highlight would be fine.

2. Allow scrolling further to the right, ideally with the ability to pick an arbitrary date

3. Make it a bit easier to tell where an hour starts and stops; if I'm in a hurry I still struggle to tell whether this is 5:30pm or 6pm:
   

4. Have an option to show the preview of the time next to each time zone as you change the selected range, similar to WTB. Right now your eye has to do some gymnastics running down the vertical line and going back to the left for each time zone, would be nice to see the time in each zone (without having to copy to the clipboard).

Otherwise, love this tool, great work!